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Observe the given graph showing changes in endometrium in a female during her menstrual cycle and select the correct statement regarding P, Q, R and S.


ADuring phase P, secretion of FSH and estrogen increases, which develops the uterine lining.
B Phase R involves release of ovum from an ovary, marked by peak levels of LH and progesterone.
C In phase Q, relaxin hormone attains a peak and repairs endometrium of uterus.
D During phase S, progesterone is secreted from ovary and maintains thickness of endometrium.

Refer to the given figure illustrating different types of pollination in plants. Rishi planted three different species of plants (X, Y and Z) in his garden whose seeds are dispersed by explosive mechanism. The given figure shows distribution of these plants in Rishi’s garden over a time period. Now, select the correct statement regarding it.


A X undergoes process P only whereas Y and Z undergo processes Q and R only.
B X could be a male plant of species undergoing only process R whereas Y and Z plants could undergo any of the processes P, Q or R depending upon the type of species.
C X is a plant undergoing only process Q so its population does not increase with time in the absence of other plant of the same species in the garden.
D Plants Y and Z are unisexual plants which can undergo only processes P and Q thereby assuring fertilisation and seed setting in absence of other plants of their species.

Study the given flow chart and fill in the blanks by selecting an appropriate option.

Red cabbage juice is __(i)__ in colour. It will turn __(ii)__ in spinach juice and __(iii) __ in window cleaner. (i), (ii) and (iii) are respectively

ARed, green and pink
BRed, pink and green
CPurple, red and green
DPurple, green and yellow.

Ms. Shobhna conducted a science activity in following steps :
I : She made crystals of pure copper sulphate from an impure sample.
II : She dissolved the crystals in pure water to make a blue solution.
III : She added a metallic piece into the copper sulphate solution and after some time colour of the solution changed to green.
Which of the following statements is correct regarding this activity?

AStep I involves a physical change while steps II and III involve chemical changes.
BSteps I and II involve physical changes while step III involves chemical change.
CAll the steps involve physical changes.
DAll the steps involve chemical changes.

Read the following statements.
(i) _____ tissue is involved in transportation of food in plants.
(ii) Transpiration produces a____ pull in the plant that causes the water to move upwards.
(iii) ____ is the loss of water from leaves and other aerial parts of a plant.
(iv) ____ are known as soldiers of the body.
Select the option that correctly fills up the blanks in any two of the statements.

A (i)-Phloem; (iii)-Transpiration
B (ii)-Suction; (iv)-Platelets
C (i)-Xylem; (iv)-Leucocytes
D (iii) Transpiration; (iv) Plasma

Arpit carried out an experiment to find out which kind of container is best for keeping the food hot. He put the same amount of food into 4 containers made of different materials which were of the same size and thickness and placed them in the same external condition. The result of his experiment was recorded on the graph as shown.
Based on results, which container, P, Q, R or S, is the best for keeping the food hot?


A Container P
B Container R
C Container S
D Container Q

The given graph shows comparative account of temperature range in four habitats (P, Q, R and S). Which of the following can be inferred from the given graph?
(i) Animals inhabiting P may show starling colouration and arboreal adaptations.
(ii) Animals inhabiting Q have thick lips and leathery skin.
(iii) Plants present in S may have thick fleshy photosynthetic stems and leaves modified into spines.
(iv) Animals inhabiting S possess thick layer of subcutaneous fat and have very small body appendages as compared to animals inhabiting Q and R.
(v) Plants like Spruce, Acacia and Opuntia are commonly found in habitat P.
(vi) Animals found in R may show hibernation or seasonal migration.


A(i), (iii) and (vi) only
B(ii), (iv) and (v) only
C(i), (iv) and (v) only
D(ii), (iii) and (vi) only